Python in a Nutshell

Name

group

Synopsis

                        m.group(groupid=0,*groupids)

When called with a single argument groupid (a group number or name), group returns the substring matching the group identified by groupid, or None if that group did not participate in the match. The common idiom m .group( ), also spelled m .group(0), returns the whole matched substring, since group number 0 implicitly means the whole regular expression.

When group is called with multiple arguments, each argument must be a group number or name. group then returns a tuple with one item per argument, the substring matching the corresponding group, or None if that group did not participate in the match.